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Calculation of Cardiac Output and Ejection Fraction in Cardiac Terminology

Understand how to calculate cardiac output and ejection fraction in the context of blood volumes and cardiac terminology. Learn the formulas and steps involved in determining these crucial cardiovascular parameters.

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Calculation of Cardiac Output and Ejection Fraction in Cardiac Terminology

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  1. BLOOD VOLUMES CARDIAC

  2. Terminology

  3. Terminology

  4. Our patient has a heart rate of 85bpm. The EDV was determined to be 120 mL with an ESV of 30mL. What is the cardiac output? - 1st we must determine the SV, which is 120 mL – 30 mL = 90 mL -2nd So the cardiac output is = SV of 90 mL x 85bpm = 7650 mL - 3rd Since 7650 mL is such a large number, let’s change it into liters, which is 7.65 L. FORMULAS WE NEED TO KNOW 1st SV = EDV-ESV 2nd CO = SV x bpm 3rd Change mL into L = 1L/1000 mL

  5. Same patientwitha heart rate of 85bpm. • The EDV was determined to be 120 mL with an ESV of 30mL. • What is the EF (ejection fraction)? • 1st if we have background, it must be subtracted from both the EDV and the ESV. • 2nd EF = 120 mL – 30 mL / 120 mL x 100% = 75% • FORMULAS WE NEED TO KNOW • EF = EDV – ESV / EDV x 100% • We did not need the heart rate information for this equation so it is considered superfluous. • Superfluous (soo-PER-floo-uhs) means "more than required.”

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